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Federal Register / Vol. 86, No. 87 / Friday, May 7, 2021 / Proposed Rules
resulted in 1.73 additional quads of FFC
energy savings.4 82 FR 6826, 6874.
While DOEs request for information is not limited to the following issues, DOE is particularly interested in comment, information, and data on the following topics to inform whether potential amended energy conservation standards would result in a significant savings of energy.
1. Energy Use Analysis As part of the rulemaking process, DOE conducts an energy use analysis to identify how products are used by consumers, and thereby determine the energy savings potential of energy efficiency improvements. DOE bases the energy consumption of ceiling fans on their rated power usage as determined by the DOE test procedure and as provided from the engineering analysis.
The energy use analysis is meant to represent typical energy consumption in the field.
For the January 2017 Final Rule, DOE
combined the ceiling fan power ratings from the engineering analysis with estimates of the distribution of annual operating hours in field operating conditions. DOE assumed that all standard, hugger, and VSD ceiling fans with brushless direct current DC
motors and 7 percent of those fans with alternating current AC motors which were estimated to have a remote control have standby power consumption. For such ceiling fans, DOE assumed a power usage of 0.7
watts and that all hours of the year not in active mode were in standby mode.
82 FR 6826, 6846.
For HSSD and large-diameter ceiling fans, DOE assumed 12 hours per day, on average, of active mode operation. DOE

assumed that HSSD ceiling fans spend approximately 10 percent of the time at high and 10 percent at low speeds, with the remaining 80 percent of the time spent at medium speed. 82 FR 6826, 6847. For LDCFs, DOE assumed an equal proportion of time spent at each of the speeds tested according to the DOE test procedure for ceiling fans. 81
FR 48619, 4863248633. As with standard, hugger, and VSD ceiling fans, DOE estimated hours of operation in standby mode for HSSD and LDCFs as the number of hours not spent in active mode. DOE assumed HSSD ceiling fans with DC motors had standby power consumption of 0.7 watts. For LDCFs, DOE assumed a standby power consumption of 7 watts, regardless of motor type. 82 FR 6826, 6847. For details on the energy use analysis, see chapter 7 of the January 2017 Final Rule Technical Support Document 2017 CF
ECS TSD.5
Issue 3: DOE requests comment and data on the assumptions used in the January 2017 Final Rule regarding the daily operating hours and the proportion of time spent at each speed setting for ceiling fans, specifically HSSD and LDCFs.
Issue 4: DOE requests data and feedback on the fraction of standard, hugger, and VSD ceiling fans with remote controls, and therefore standby power consumption.
Issue 5: DOE requests comment on whether any of the smart technologies available on the market would impact the efficiency of ceiling fans as measured by DOEs test procedure at 10
CFR part 430, subpart B, appendix U.
Specifically, DOE seeks comment on whether smart technologies improve the efficiency of ceiling fans or impact the
number of operating hours in each mode. DOE additionally requests data regarding the comparative energy use of fans with and without smart technology.
2. Shipments DOE develops shipments forecasts of ceiling fans to calculate the national impacts of potential amended energy conservation standards on energy consumption, net present value NPV, and future manufacturer cash flows. DOE shipments projections are based on available historical data broken out by product class and efficiency. Current sales estimates allow for a more accurate model that captures recent trends in the market.
For the January 2017 Final Rule, DOE
relied on various sources for estimating historical shipments data for ceiling fans. For standard, hugger, and VSD
ceiling fans, DOE used data from Appliance magazines Statistical Review from 19912006, data from ENERGY
STAR Annual Reports from 20032013, and data purchased from NPD Research group from 20072011. DOE
disaggregated shipments between standard, hugger, and VSD product classes based on the relative fraction of model counts found online and in-store and feedback from manufacturers. DOE
was unable to find historical shipments data for HSSD and LDCFs; therefore, DOE primarily relied on manufacturer feedback and available model counts online to estimate shipments. 82 FR
6826, 6853. For details on the shipments methodology used in the previous rulemaking, see chapter 9 of the 2017
CF ECS TSD. Table II.1 shows estimated annual shipments by product class from 2016 to 2020.

TABLE II.1ANNUAL SHIPMENTS FOR CEILING FANS
Thousand units Year 2016
2017
2018
2019
2020

Standard

Hugger
9,718
10,015
10,232
10,296
10,258

VSD

9,216
9,499
9,704
9,765
9,729

HSSD
76
78
80
81
82

LDCF
540
554
564
571
542

Issue 6: DOE requests historical ceiling fan shipments data for each product class listed in section II.A and seeks feedback on how the annual shipments estimates shown in Table II.1
compare to the actual shipments in those years. If disaggregated shipments
data are not available at the product class level, DOE requests shipments data at any broader available category e.g., residential vs. commercial and industrial sectors.

C. Technological Feasibility
4 DOE determined this amount by subtracting the FFC energy from TSL 5 max-tech from the FFC

energy from TSL 4 current standard; 3.742.01 =
1.73 quads.

5 The 2017 CF ECS TSD can be found here:
https www.regulations.gov/document?D=EERE2012-BT-STD-0045-0149.

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During the January 2017 Final Rule, DOE considered a number of technologies for reducing ceiling fan energy consumption. 82 FR 6826, 6837
6838. DOE is interested in understanding any technology
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